Wilwood 120-14318-FSR TC6R Radial Mount 6-Piston Brake Caliper Red

The Wilwood 120-14318-FSR TC6R Radial Mount Brake Caliper delivers a new generation of big brake technology engineered for the heavy-duty demands of custom late-model trucks and sport utility vehicles. Six stainless steel pistons housed within a high-strength forged aluminum body provide exceptional stopping power, durability, and a bold gloss red finish that looks as aggressive as it performs.

Forged Aluminum Construction

The TC6R caliper body is stress-flow forged from premium-grade billet aluminum alloy. Finite Element Analysis (FEA) structural technology guided the design to minimize weight while maximizing rigidity against deflection. The expanded bridge radius accommodates rotors up to 1.38 inches thick and up to 16 inches in diameter. Six high-strength coated steel alloy cross-bridge bolts reinforce the body against separation and deflection under high pressure and heavy loads, while steel insert plates protect bridge surfaces from wear caused by pad load-bearing edges.

Six-Piston Stainless Steel Piston Design

Starting at just 8.66 lbs, the TC6R achieves outstanding clamping efficiency through six thick-walled stainless steel pistons. The heavier piston walls resist deflection and distortion under severe load conditions. Stainless steel construction resists corrosion and limits heat transfer from the brake pads into the caliper body, seals, and brake fluid — a critical benefit for sustained performance.

Differential Piston Bore Technology

Derived from Wilwood's racing caliper program, the differential piston bore design proportionately distributes clamping pressure across all six pistons for balanced pad loading and even wear at all operating loads and temperatures. Piston bore volumes are engineered for compatibility with OEM master cylinder output capacities and factory power boost systems — no aftermarket master cylinder required.

Key Features:

• Six thick-walled stainless steel pistons for superior clamping force
• Stress-flow forged premium-grade billet aluminum alloy body
• FEA-optimized design for maximum rigidity and minimum weight
• Accommodates rotors up to 1.38 in. thick and 16 in. in diameter
• Six high-strength coated steel alloy cross-bridge bolts
• Steel insert bridge plates for wear protection
• Differential piston bore design from Wilwood racing technology
• Compatible with OEM master cylinders and power boost systems
• Rubber-dampened fluid transfer tubes
• Recessed two-piece bleed screws
• Bridge-mounted pad-dampening springs to reduce vibration, road rattle, and brake squeal
• Multi-process gloss red finish for a custom appearance
• Radial mount design for use with Wilwood adapter brackets

The gloss red multi-process coating on the 120-14318-FSR delivers a premium custom appearance inside the wheel. Radial mount adapter brackets, available separately through Wilwood big brake kit configurations, provide a secure and precise attachment point to the factory spindle mount bosses.